Just upgraded to Win 10 to see if it would help an i3 core HP machine that was really struggling with Win7 Home Premium and IE10. I didn't think so much of Microsoft's new Edge browser, but once I installed a fresh copy of Chrome, all of the delays I used to have with Win7 and IE10 went away. I also tried FireFox, but it doesn't seem to play as well with Win10 as Google Chrome for me.
Next, I think I'll do a clean install of Win10 to get rid of all the leftover bloatware registry junk that I uninstalled. I'm no expert, but I do like the results do far.